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Kobayashi Conifer Blend, 3-6mm, 14L

5 reviews
8 items left


  1. Ideal blend for conifers or plants which prefer less water retention.
  2. Suitable for bonsai, succulents, cacti, specialist carnivorous plants and more.
  3. Mixed and ready to use from the bag.
  4. Consistent particle size = 3 ~ 6mm
  5. Available in 14L bags.
  6. Exclusively imported from Japan by Bonsai Tree.


60% Akadama a granular volcanic clay-like mineral has been extensively used in Japan for many years. Akadama is unique as a growing medium and is sought after due to its ability for water retention and nutrients due to its high CEC value. However at the same time it provides porosity and free drainage. When fired at 300 deg C hard Akadama retains its shape for longer.

14% Ezo sand is pumice sand, a lightweight volcanic rock perfect as a soil amendment. Provides excellent drainage and air circulation, the porosity encourages microbial life to thrive. It has a neutral pH and releases various trace materials.

10% Kiryu is a sharp river sand and contributes to the soil structure by improving and retaining good drainage.

14% Karuishi or pumice stone enhances water retention, nutrients and oxygen as a result of the particles porosity. It has an essentially neutral pH of 6.

2-3% Charcoal aids soil health through promoting microbial growth, both through providing a porous structure with a high surface area on which to seat, as well as providing high-purity carbon for cellular growth. Further benefits are increased moisture and improved nutrient retention (high CEC value).

Want to make your own blend? Buy the individual components here.

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    Bonsai Tree Kobayashi Blend, 3-6mm, 14L Review

    It is an wonderfull product.I use it with my more expensive nepenthes and they thrive in it.

    Walter V.
    South Africa South Africa

    BBI (Best Bonsai Investment)

    This has been by far the best investment I have made for my bonsais. They have flourished. Will soon have to get some more. Thanks for making my journey into bonsai so much better.

    Johan v.
    South Africa South Africa

    Great product

    Perfectly mixed and my trees love it.

    Percy H.
    South Africa South Africa

    One Of the Best Growing Medium's I've purchased

    I've been buying from Bonsai Tree for the past 6 years, and all the products are fantastic, Have to say though, that this is one of the best growing mediums I have purchased in awhile. So easy to use, saves time and my plants are loving it! Thank you for introducing this product, and always looking for new and exciting ranges to add to your shop.

    South Africa South Africa

    What a pleasure

    I have used this mix for Japanese and Trident Maples, Celtis and Olives. It is fantastic! Everything is flourishing and growing extremely well. So nice to just open and use. I'd highly recommend!

    Richard w.
    South Africa South Africa